<template>
  <div>
    <el-upload :action="uploadUrl" :before-upload="handleBeforeUpload" :on-success="handleUploadSuccess"
      :on-error="handleUploadError" name="file" :show-file-list="false" :headers="headers" class="editor-img-uploader"
      v-if="type == 'url'">
      <i ref="uploadRef" class="editor-img-uploader"></i>
    </el-upload>
  </div>
  <div class="editor">
    <quill-editor ref="quillEditorRef" v-model:content="content" contentType="html"
      @textChange="(e) => $emit('update:modelValue', content)" :options="options" :style="styles"
      @ready="onEditorReady" />
  </div>
</template>

<script setup>
import { reactive, ref, onMounted } from "vue";
import { QuillEditor, Quill } from "@vueup/vue-quill";
import "@vueup/vue-quill/dist/vue-quill.snow.css";
import { getToken } from "@/utils/auth";
import { ElLoading } from "element-plus";
// import ButtonBlot from './ButtonBlot';
// import { ImageResize } from "quill-image-resize-module";
import { useRouter } from "vue-router";
import hljs from "highlight.js"; // 导入 highlight.js
const router = useRouter();

// 注册自定义 Blot
// Quill.register(ButtonBlot, true);
// Quill.register("modules/imageResize", ImageResize); // 注册模块
const { proxy } = getCurrentInstance();
let loadingInstance; //loading实例
const quillEditorRef = ref();
const uploadUrl = ref(import.meta.env.VITE_APP_BASE_API + "/file/upload"); // 上传的图片服务器地址
const headers = ref({
  Authorization: "Bearer " + getToken(),
});

const props = defineProps({
  /* 编辑器的内容 */
  modelValue: {
    type: String,
  },
  /* 高度 */
  height: {
    type: Number,
    default: null,
  },
  /* 最小高度 */
  minHeight: {
    type: Number,
    default: null,
  },
  /* 只读 */
  readOnly: {
    type: Boolean,
    default: false,
  },
  /* 上传文件大小限制(MB) */
  fileSize: {
    type: Number,
    default: 5,
  },
  /* 类型（base64格式、url格式） */
  type: {
    type: String,
    default: "url",
  },

  needImage: {
    type: Array,
    default: ["link", "image"],
  },
  customButton: {
    type: Array,
    default: ['customButton'],
  },
  btnName: {
    type: String,
    default: "点击按钮",
  },
  showBlock: {
    type: Boolean,
    default: true,
  },
  showHeight: {
    type: Boolean,
    default: false,
  }
});
const options = ref({
  theme: "snow",
  bounds: document.body,
  debug: "warn",
  modules: {
    // 工具栏配置
    toolbar: {
      container: [],
      syntax: {
        highlight: (text) => hljs.highlightAuto(text).value, // 代码高亮
      },
      handlers: {
        // customButton: () => {
        //   newButton()
        // }, // 自定义按钮处理函数
        image: () => {
          proxy.$refs.uploadRef.click();
        }
      },
    },
    // imageResize: {
    //       modules: ["Resize", "DisplaySize", "Toolbar"], // 启用图片调整模块
    //     },
  },
  placeholder: "请输入内容",
  readOnly: props.readOnly,
});
const styles = computed(() => {
  let style = {};
  if (props.showHeight) {
    style.height = ` ${props.height}px`;
  } else {
    if (props.minHeight) {
      style.minHeight = `calc(100vh - ${props.minHeight}px)`;
    }
    if (props.height) {
      style.height = `calc(100vh - ${props.height}px)`;
    }
  }
  return style;
});

const content = ref("");
watch(
  () => props.modelValue,
  (v) => {
    if (props.showBlock) {
      options.value.modules.toolbar.container = [
        ["bold", "italic", "underline", "strike"], // 加粗 斜体 下划线 删除线
        ["blockquote", "code-block"], // 引用  代码块
        [{ list: "ordered" }, { list: "bullet" }], // 有序、无序列表
        [{ indent: "-1" }, { indent: "+1" }], // 缩进
        [{ size: ["small", false, "large", "huge"] }], // 字体大小
        [{ header: [1, 2, 3, 4, 5, 6, false] }], // 标题
        [{ color: [] }, { background: [] }], // 字体颜色、字体背景颜色
        [{ align: [] }], // 对齐方式
        ["clean"], // 清除文本格式
        props.needImage, // 链接、图片、视频["link", "image", "video"]
        // props.customButton, // 自定义按钮
      ]
    } else {
      options.value.modules.toolbar.container = [
        ["code-block"], // 引用  代码块
      ]
    }

    if (v !== content.value) {
      content.value = v === undefined ? "<p></p>" : v;
    }
  },
  { immediate: true }
);

const onEditorReady = (editor) => {
  if (props.showBlock) return
  setTimeout(() => {
    editor.format("code-block", true);
  }, 100)
}

// 如果设置了上传地址则自定义图片上传事件
onMounted(() => {
  // Quill.register("modules/imageResize", ImageResize); // 注册模块

  // if (props.type == "url") {
  //   let quill = quillEditorRef.value.getQuill();
  //   let toolbar = quill.getModule("toolbar");
  //   toolbar.addHandler("image", (value) => {
  //     if (value) {
  //       proxy.$refs.uploadRef.click();
  //     } else {
  //       quill.format("image", false);
  //     }
  //   });
  // }
});

// 上传前校检格式和大小
function handleBeforeUpload(file) {
  UploadLoading(true);
  const type = ["image/jpeg", "image/jpg", "image/png", "image/svg"];
  const isJPG = type.includes(file.type);
  //检验文件格式
  if (!isJPG) {
    UploadLoading(false);
    proxy.$modal.msgError(`图片格式错误!`);
    return false;
  }
  // 校检文件大小
  if (props.fileSize) {
    const isLt = file.size / 1024 / 1024 < props.fileSize;
    if (!isLt) {
      UploadLoading(false);
      proxy.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
      return false;
    }
  }
  return true;
}

// 上传成功处理
function handleUploadSuccess(res, file) {
  // 如果上传成功
  if (res.code == 200) {
    UploadLoading(false);
    // 获取富文本实例
    let quill = toRaw(quillEditorRef.value).getQuill();
    // 获取光标位置
    let length = quill.selection.savedRange.index;
    // 插入图片，res.url为服务器返回的图片链接地址
    quill.insertEmbed(length, "image", `${import.meta.env.VITE_APP_BASE_API}/file/getImageStream?path=${res.data.url}`);
    // 调整光标到最后
    quill.setSelection(length + 1);
  } else {
    UploadLoading(false);
    proxy.$modal.msgError("图片插入失败");
  }
}
// 上传失败处理
function handleUploadError() {
  UploadLoading(false);
  proxy.$modal.msgError("图片插入失败");
}

const UploadLoading = (showClose) => {
  if (showClose) {
    loadingInstance = ElLoading.service({
      lock: true,
      text: "加载中...",
      background: "rgba(0, 0, 0, 0.7)",
    });
  } else {
    loadingInstance.close();
  }
};
const newButton = () => {
  // 获取富文本实例
  var quill = toRaw(quillEditorRef.value).getQuill();
  // 获取光标位置
  let length = quill.selection.savedRange.index;

  const buttonValue = {
    text: props.btnName,
    bgColor: props.btnBgColor,
    color: props.btnColor,
    onClick: () => router.push(props.routerUrl)
  };
  quill.insertEmbed(length, 'button', buttonValue);
}
</script>

<style>
.editor-img-uploader {
  display: none;
}

.editor,
.ql-toolbar {
  width: 100%;
  white-space: pre-wrap !important;
  line-height: normal !important;
}

.quill-img {
  display: none;
}

.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}

.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}


/* 自定义按钮样式 */
.ql-toolbar .ql-customButton::before {
  content: "Btn";
  font-size: 14px;
  font-weight: bold;
  color: #007bff;
  padding: 5px;
  border: 1px solid #007bff;
  border-radius: 3px;
  cursor: pointer;
}

.qiBtn {
  background-color: #007bff;
  color: white;
  border: none;
  padding: 5px 10px;
  border-radius: 3px;
  cursor: pointer;
}
</style>
